Combination flue-expander and beading-tool.



Patented Nov. 3, 1914.

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Witneooeo ELMER ELSWORTH STILLWELL, 0F ORIZABA, MEXICO.

' COMBINATION FLUE-EXPANDER IBEADING-TOOL.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed March 20, 1914. Serial No. 825,995.

To all whom it may concern Be it known that I, ELMER LLswon'rn S'IILLWELL, a citizen of the United btates of America, residing at Orizaba, Republicof Mexico, and State of Vera Cruz, have invented certain new and useful Improve single operation, thus eliminating the necessity of providing a tool for each operation.

'Still another object of this invention is the provision of a tool of the above character which is capable'of being used with either a steam, air or electric hammer.

A further object of the invention is to provide a device which is particularly simple in construction, easily operated and eifectiv in use.

With these and other objects in view, the invention consists in the novel combination and arrangement of parts which, will be described in detail, in the following specifications and accompanying drawings in which,- I Figure 1 is a side View in elevation of a tool constructed in accordance with this invention showing the same as it would appear when in use. Fig. 2 is an edge view of the tool. Fig. 3 is a longitudinal sectional View of the tool, and Fig. 4 is a detail perspective view of one of the tube engaging elements.

Referring now to the drawings the numeral 1 designates as an entirety a tool constructed in accordance with this invention,

' while "the numeral 2 designates the boiler sheet, in which the boiler tube 3, which is to be expanded and headed is adapted to be inserted.

The tool 1 comprises the cylindrical outer casing 4, having formed integral therewith a pair of outstanding members 5 and 6, each of which is provided intermediate its ends with the ears 7 and 8. A suitable bolt receivin aperture is formed in each of said responding aperture in the opposite ear.

Formed intermediate the ears and centrally of the longitudinal axis of the device are the apertures 9 which are arranged to come in direct alinement with each other as shown in the drawings. A centrally located longitudinal bore 10 is formed in the cylindrucal outer casing and is arranged to receive the plunger 11 having formed integrally at one end the cylindrical extension 12. Extending through the apertures formed 1n the ears 7 and 8 are provided the bolts 13 and 14 respectively which are provided with the nuts 15 to hold the same in place.

The expanding and beading members which are designated generally by the numoral 16 preferably comprise the substantially triangular body portion 17 having one edge curved at 18. This curved edge 18 is provided near one extremity with the recess 19 the end walls of which are arranged to form the expanding element 20 and the beading'element 21 respectively. The adjacent edge of the body portion 17 is provided with the enlargement 22 which is rounded as at 23 to form the cam surface 23 which is arranged to engage the end of the plunger 11 opposite the extension 12 as clearly shown in the drawings. A suitable aperture 24 is.

formed in the body portion 17 and is arranged to receive either of the bolts 13 or 14 when the device is in use.

It will be evident from the foregoing that in use the device is placed in the boiler tube, which is to be secured in place, as illustrated in Fig. 1, and upon inserting the device as far as possible and striking the reduced cylindrical end of the plunger 11, with a hammer of any suitable type, the cam surfaces 23 which rest against the end of the plunger 11 will be forced outwardly which will cause the expanding elements 20 to engage the inner wall of the boiler flue and force the same outwardly. At the sameinstant the beading elements 21 will engage the outer end of the boiler flue and flange the same outwardly thus firmly securing the tube in the boiler sheet. -The flat bottom wall of the recess 19 will engage the inner wall of the flue and thus force the said flue into frictional engagement with the wall of the aperture in the boiler sheet and form a water tight joint.

While in the foregoing the preferred embodiment of this-invention has been illustrated and set forth, it isito be understood that such changes in the combination and each comprising a substantially triangular body having an outwardly projecting end and a curved edge, and also having a curved recess at the outer end of the curved edge, expanding and beading elements formed by the Walls of the recess, and an enlargement formed on the adjacent wall of the body to form a cam for engagement with the end of the plun er.

' In testimony whereof I aflix my signature in presence of two Witnesses.

ELMER ELSWORTH STILLWELL.

Witnesses:

F. E. HAYES, E. W. Hemmer-1s. 

